Small ZIP archive of 193 KB tied to ET2220I, with V1.2 in the name pointing to a version or board revision. Brand and contents are not specified, so open the archive to see whether it holds firmware, a schematic or other service data. ET2220I matches the model naming of an all-in-one PC, but confirm the device before use. If it contains a firmware image, back up the existing chip first and check that the file size suits the flash part; if it holds drawings, compare the revision against the PCB.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @schematicslaptop. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.